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<B><A HREF="ASINH.html">ASINH(3)</A></B>	       FreeBSD Library Functions Manual 	      <B><A HREF="ASINH.html">ASINH(3)</A></B>


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<H2>NAME</H2><PRE>
     <B>asinh</B>, <B>asinhf</B> - inverse hyperbolic sine functions


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<H2>SYNOPSIS</H2><PRE>
     <B>#include</B> <B>&lt;math.h&gt;</B>

     <I>double</I>
     <B>asinh</B>(<I>double</I> <I>x</I>)

     <I>float</I>
     <B>asinhf</B>(<I>float</I> <I>x</I>)


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<H2>DESCRIPTION</H2><PRE>
     The <B>asinh</B>() and the <B>asinhf</B>() functions compute the inverse hyperbolic
     sine of the real argument <I>x</I>. For a discussion of error due to roundoff,
     see <B><A HREF="math.html">math(3)</A></B>.


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<H2>RETURN VALUES</H2><PRE>
     The <B>asinh</B>() and the <B>asinhf</B>() functions return the inverse hyperbolic sine
     of <I>x</I>.


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<H2>SEE ALSO</H2><PRE>
     <B><A HREF="acosh.html">acosh(3)</A></B>,	<B><A HREF="atanh.html">atanh(3)</A></B>,  <B><A HREF="exp.html">exp(3)</A></B>,  <B><A HREF="math.html">math(3)</A></B>


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<H2>HISTORY</H2><PRE>
     The <B>asinh</B>() function appeared in 4.3BSD.

4.3 Berkeley Distribution	  May 6, 1991				     1
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